Machine for rebabbitting connecting rods



Nov. 3, 1-931. c. A. BROWN I MACHINE FOR REBABBITTING commune RODS Filed Dec. 20, 1930 3 Sheets-Sheet 1 U z Q hT T L 1 Q n W w 3 0 N v f m NN L RN Q \\Q B. m\ 4w. Ew n m\ m 5 Z\ Z k\\ R 9 Q Q F0 Wm NEW IN m .TN o nn I IN uh HHWHHHUWHX AMW? 3 Sheets-Sheet 2 C. A. BROWN Nov. 3, 1931 MACHINE FOR REBABBITTING CONNECTING RODS 1 Filed Dec.

Nov. 3, 1931. c. A. BROWN 1,830,423

MACHINE FOR REBABBITTING CONNECTING R ODS Filed Dec. 20, 1950 5 Sheets-Sheet 3 Patented Nov. 3, 1931 UNITED s'mrs CHARLIE A. BROWN, OF CHRISTOPHER, ILLINOIS MACHINE FOR REBABBITTING CONKECTING RODS Application filed December 20, 1930. Serial No. 503,814.

This invention relates to machines for babbitting bearings and the general object of the invention is to provide, a machine for babbitting bearings of connecting rods such as connecting rods used on internal combustion engines.

Afurther object is to provide adjustable means whereby a core may be disposed within the fork or bearing of the connecting rod 1 and whereby the connecting rod may be accurately centered with relation to the core and held in place to permit Babbitt metal to run between the core and the inner face of the connecting rod bearing.

Another ob ect is to provide fillet molding means adapted to be disposed on opposite sides of the connecting rod bearing to thus form fillets on the opposite sides of the Babbitt metal and provide means whereby the fillet molding means may be shifted simultaneously toward or from the fork or bearing of the connecting rod.

Other objects will appear in the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a front elevation of a rebabbitting machine constructed in accordance withmy invention; 80

broken away;

Figure 3 is a side elevation thereof; Figure 4 is a vertical section through the middle of the machine; Figure, 5 is a fragmentary horizontal section through the middle of the machine;

Figure 6 is a side elevation of the rod supporting dowels; I

Figure 7 is an elevation of a modification of the rod supporting dowels.

Referring to these drawings 10 designates a base and 11 a plate formed as a main casting of the jig and extending upward from the base. he plate 11 is formed at opposite ends with upwardlv extending annular sockets 12 having set screws 18.

The plate 11 is recessed at 14 to receive two transversely movable blocks or slides 15 and 16. Passing through the plate 11 and disposed to extend outward between the blocks disposed in superposed relation.

Figure 2 is a top plan View thereof partly are the screw pins 17. These have screwthreaded engagement in the plate 11 and extend into the recessed portion 14 and are Lock nuts 18 are engaged with said pins so as to hold them. projected just the desired distance.

The ends of the pins projecting away from the plate 11 are reduced in diameter. These pins are adapted to engage in a vertical groove formed in the flat face of an approximately semi-cylindrical core 19, the'groove being designated 20. This core may be held in position by a movable bolt 21 extending through the back of plate 11 as shownin Figure 4;. It is to be understood that a nu'm ber of different sizes of cores l9'are designed to be used as will be hereafter explained, these cores varying in accordance with the sizes of the connecting rods. Each. of the cores is formed at its upper end with a groove 22. Slidable plates 15 and 16 are disposed to extend behind this core 19 and bear against the flat face thereof. The plates 15 and 16 are adjustable toward or from each other by means of cap screws 23 extendinginto the plates through slots 24 formed in the back or plate 11. One of these plates, as for instance, the'plate 16 has formed upon its upper face the graduated scale 25 which coacts with a zero mark 26 formed upon the back piece 11. Thus this plate 16 may be adjusted with reference to this zero mark so as to properly center the connecting rod.

Each of these plates 15 and 16 is provided with an outwardly projecting dowelpin, one. designated 26 and the other 27. The pin 27 is larger than the pin 26 and these pins as shown clearly in Figure 5 are designed to pass through the usual bolt openings a in the connecting red A. v

The pin 26 is relatively small and has a loose fit in one of the openings a while the pin 27 fits snugly within'the opening but not so snugly but that the connecting rod may be easily put in place. a

Also mounted upon the plates 15 and 16 are the laterally disposed clamps 28, these being mounted upon stud bolts 29 extending out from the plates 15 and 16. The clamps 28 are rotatable upon thestud bolts and are freely movable inward and outward but are urged inward by the springs 30. Attached to each clamp 28 is a handle 31 which extends outward and is angularly bent at 32 so as to form a hook whereby the clamp may be rotated into or out of its clamping position and whereby it may be pulled outward against the action of the spring 30 to release the pressure of the clamp against the connecting rod and thus permit the clamp to be readily shifted. hen in position, the clamps are turned inward and bear over the outer face of the opposite shoulders of the connecting rod as shown in Figure 5, thus holding the connecting rod in place with the Disposed above and below the connecting rod are the fillet molds which I have designated 33. These are formed upon their confronting faces as at 34 to form the fillet or bead in the Babbitt metal, which fillet projects out beyond the side face of the connecting rod. The fillet molding members 33 are each mounted upon a transversely extending bar. There are two of these bars, one for each fillet .mold, the uppermost bar being designated 35, the lower bar being designated 36. These bars at their ends are enlarged as at 37 andlapertured to receive the vertical posts 38 extending upward from the sockets 12, the posts being held in these sockets by the set screws 13..

Disposed between each pair of these heads 37 is a cam 39. Each cam is mounted upon a horizontal shaft 39 Each cam or rather the shaft of the cam is provided with a radially extending arm 40, these arms extending downward and being connected by a connecting rod 41 for simultaneous movement. Upon the shaft of one cam, there is disposed a handle 42 whereby the cams may be simultaneously operated. \Vhen the cams are turned in. one position, they permit the bars 35 and 36 to move toward each other and when the cams are turned in another position, they shift the bars 35 and 36 away from each other. Springs 43 supported against collars 44 bear against these heads 37 and the bars and urge the bars toward each other and toward the cams 39. Thus it will be seen that when the handle 42 is turned upward, the cam will permit the two bars to move toward each. other and when the handle is turned downward, the cam will'be turned through aquarter of a revolution and the bars will be shifted away from each other. This will carry the fillet molding members 33 away from each other or cause them to move toward each other and into position against the lateral faces of the connecting rod hearing. The fillet molding members 33 are held in. positionby pivoted clamps 46, each pivoted at 47- upon one of the bars35 and 36. The middle of each clampis bowed at 48 to accommodate the curvature of the fillet molding members. Each clamp 46 at its free end is notched at 49 to engage a stud 50 mounted upon the corresponding bar 35 or 36. When these clamps are in place, they hold the fillet molding membersafirmly in place and into.

to fit thisibearing.

In actual use, nine different sizes of cores are used for the different sizes of rods. It is obvious that a greater or less number of difierent sized cores may be used. dowel pins extending through the bolt apertures for the connecting rod.

The dowel pins 26 and 27 are made in three sizes, that is, three-eightlis, seven-sixteenths and one-half inch, but all of these dowel pins are one-half inch in diameter where they screw into the sliding blocks 15 and 16. The

scale 25 may be on the frame of the machine and the zero. mark 26 on one of theoslide blocks. The dowels can be put infrom the front or back and can be entirely removed. This is of particular value when rods like the Ford A connecting rods which have bolts made solid with the rod are being rebabbitted. In these cases, the bolts can pass through the half-inch holes where the dowels were. It is to be particularly noted, however, that: the dowels of each pair are of diferent sizes, one of the dowels having a loose fit and the other dowel having a snug or running fit. Thus one of the dowel pins fits in the rod loosely and the one on the sliding block 16 has a running fit. The rod to be poured is measured from the centers of the bolt holes. Y'Ve will assume that the'distance between the bolt holes is 2 inches.

The lock bolt on the back of the sliding block 7 16 is loosened and this block or slide is shifted so as to bring the 2 inch mark on the scale 25. in line 'w1t-h the, zero line 26 on the frame. The other slide block is then pulled over to where the smaller sized dowel 26 will line up with the hole in the rod andthe rod is slipped upon. these dowels and clamped thereon. The reason for the use of tlresmall dowel 26 is that it allows the rods that are not machined perfectly true with respect to the bolt holes to seat themselves between the is shifted soas to shift the cams 39 and perm1t the two bars 35 and 36;to;move toward each otheigbringing the fillet molds or dies down'into position against the upper and lower faces of the rod. The Babbitt metal is then poured. When it is hardened sufficient- After the rod is. putin place and properly clamped. the handle42- ly, the handle 42 is operated to force the two bars 35 and 36 away from each other, carrying the fillet dies or molds away from each other, the rod holding members 28 are then pulled out against the action of the springs and rotated out of their holding position and the connecting rod is removed.

' Attention is called to the fact that the fillet dies or molds 33 are inserted in place downward behind the bar and upward behind the bar 36. Thus it is easy to put them in and they are held solidly and are easily adjusted in place on rods that have uneven faces. These fillet molds or dies 33 are held in place by the swinging latches 46 but there is a small amount of spring or give in the parts that hold the fillet molds in place so that these molds may seat on uneven rods either sidewise or from front to back.

It is to be understood that I contemplate nine sizes of cores 19 and that there are nine sizes of fillet dies 33 to fit the difierent cores, the bottom one, of course, fittingclose against the core as illustrated in Figure 4 while the top fillet die is the same in all respects as the bottom fillet die except that it is poured out about one-fourth of an inch larger so as to form a pouring opening 22 with a slight taper to it so as to draw off the 'babbitt easily.

While in Figure 5 I have illustrated the dowel pins 26 and 27 as being straight pins, screw-threaded at their inner ends for insertion into the slides15 and 16, I preferably form the dowel pins as illustrated in Figure 6. These dowel pins are all precisely half an inch in diameter where they screw into the slides 15 and 16 and these dowelpins might be screwed in either from the front or back, though I have illustrated them as screwing in from the front but each dowel pin is reduced in diameter at its projected end as shown in Figure 6, the projecting portion of the dowel pin 26 being less in diameter than the projecting portion of the dowel pin27 for the reasons hereinbefore stated. The shoulder at the uncture of the dowels and the base portion thereof should come even with the front faces of the slides 15 and 16.

inasmuch as the shoulder on this pin will bear against the rear face of the back plate 11 and the shoulder on the front end of the pin will just come through to the face of the slide 16. This form of dowel pin is to be used with the slides 15 and 16both and the projections of the dowel pins will have the same difference in diameter as before adverted to.

While I have illustrated a machine in which all of the partshave been designed to secure particular effectiveness, I do not-wish to be limited to these details, as obviously movable dowel pin, meanson the supporting plate for remo'vably supporting a vertically disposed semi-cylindrical core in front of the plate and between the dowel pin openings, means for clamping a connecting rod with its bearing disposed concentric to the core and its ibolt holes in alinement with the openings for thedowel pins, upper and lower fillet molds, transversely extending bars upon which the filletmolds are mounted, vertical posts extending through said bars, springs urging the bars toward each other, and rotatable cams whereby the bars may be shifted away from each other against the action of the spring.

2. A machine for rebabbitting connecting rods including a vertical supporting plate, opposed slides carried on the supporting plate and adjustable towards and from each other and each having an openingfor a removable dowel pin,.means on the supporting plate for removably supporting a vertically disposed semi-cylindrical core in front of the plate and between the dowel pin openings, means for clamping. a connecting rod-with its bearing disposed concentric to the core and its bolt holes in alinement with the openings for the dowel pins, upper and lower fil let molds, transversely extending bars upon which the fillet molds are detachably mounted on the bars, the bars at their extremities having eyes, vertical posts extending through the eyes of said-bars, a cam mounted between the eyes on each post, manually operable means for rotating said cams to shift the bars toward or away from each other and carry the fillet molds into or out of operative position, springs surrounding the posts and bearing against the eyes of the bars, and adjustable means for tensioning the springs.

3. A'machinefor rebabbitting connectingg j rods including a vertical supporting plate, opposed slides carried on the supporting plate and adjustable toward or from each other and each having an opening for a re-" movable dowel pin, means on the supporting plate for removably supporting a \ertically" disposed semi-cylindrical core in front of the plate and between the dowel pin open ngs. means for clamping a connecting rod with its bearing disposed concentric to the core and its bolt holes in alinement with .the openings for the dowelpins, upper and lower fillet molds, transversely extending bars upon which the fillet molds are'detachably mounted on the bars,-the bars at their-extremities having eyes, vertical posts extending through the eyes of said bars, a. cam mounted between the eyes on each post, each cam'hav-ing an arm, a rod connecting said arms, anda lecentric to the core and with its bolt holes in alinementwith and engaged by said dowel pins, upper and lower fillet molds, vertically movable means for supporting said fillet molds, springs urging the supporting means for the fillet means toward each other, and manually actuatable means for shifting the fillet mold carrying means simultaneously away from each other against the action of said springs.

5. A machine for rebabbitting connecting rods including a vertical supporting plate, opposed slides carried on the'supporting plate and adjustable toward or from each other, each of said slides carrying a connects ing rod engaging means and. each slide having an opening fora removable dowel pin, dowel pins removably disposed in said openings, one of the dowel pins being sufficiently small to fit loosely .within the bolt opening of the connecting rod and the other fitting in the corresponding bolt opening, means on the supporting plate for removably supporting a vertically disposed semiecylindrical core in front of the plate and between said dowel pins, {upper and'lower fillet m'oldsvertically movable into position against the upper and under surfaces respectively of the connecting rod, means forv clamping said fillet molds in place, and means for simultaneously shifting said fillet molds toward or away from each other and the connecting rod.

6. A machine for rebabbitting connecting rods including a vertical supporting plate recessed upon one-face, opposed slides mounted in the recess of the supporting plate, the slides being adjustable toward or from each other, and each having a dowel pin opening, dowel pins removably disposed in said openings, one of the pins being relatively small to have a loose fit .within the bolt opening of a connectingrod and the other having a sliding fit in the corresponding bolt opening stud bolts projecting from the slides, each having a rotatable clamping head-mounted thereon provided with a handle, springs surrounding the stud bolts and bearing against the clamping heads to urge them inwardinto clamping operable means for simultaneously rotating said cams to simultaneously force the ends of the bars away from each other, and springs surrounding the-posts and bearing against the ends of the bars and urging the bars toward said cams, the springs being adjustable 5 as to tension. 7

7 A machine for rebabbitting connecting rods including'a vertical supporting plate,

opposed slides carried on the supporting plate and adjustable toward .or from each other in a horizontal plane, the slides carrying movable dowel pins, adapted to be disposed through bolt holes of a connecting rod bearing, studbolts mounted uponthe slides, connecting rod clamping heads loosely mounted upon the stud bolts and each having a handle whereby it may be rotated, springs on the stud bolts-urging the'clamping heads inward against the end of the connecting rod when the dowel pins are disposed through the bolt holes of the connecting rod, a vertically disposed semi-cylindrical core detachably mounted upon the supporting plate between said dowel pins, vertically extending posts disposed opposite each end of the plate, upper and lower transversely extending bars through the endsof which said posts loosely pass, cams mounted between the opposed faces of the ends of said bars, manually operable means for simultaneously oscillating said cams to force the bars apart or permit them tomove "toward each other, springs surrounding the posts and urging the ends of the bars toward each other and against the cams, each of said bars being recessed at its middle to receive afilletm-old, the mold having a flange bearing against the bar, and a locking member pivoted upon each bar for movement ..in a-horizontal plane, and When closed in parallel relation to the bar engaging over the end of'the fillet mold and holding it in place, each of the locking members being bowed 'o-utwardly 'at its middle to conform to the semi-circular contour of the fillet molds;

8. A machinefor rebabbittingconnecting rods including a vertical supporting plate re in the recess and adjustable toward or from each other and each having adowel pin, stud bolts projecting from the slides, each having a rotatable clamping head mounted thereon and provided with a handle, springs surrounding the stud bolts and bearing against the clamping heads to urge them inward into clamping engagement with the opposed shoulders of the connecting rods, upper and lower fillet molds, transversely extending bars supporting said fillet molds, a post passing loosely through the extremities of said bars, cams each disposed between the like ends of the bars, manually operable means for simultaneously rotating said cams to simultaneously force the ends of the bars away from each other, and springs surrounding the posts and bearing against the ends of the bars and urging the bars toward said cams.

9. A machine for rebabbitting connecting rods including a vertical support, opposed slides carried on the support and adjustable toward or from each other, each slide carrying a connecting rod engaging means and an outwardly projecting dowel pin, means on the support for removably supporting a vertically disposed semi-cylindrical core in front of the support and between said dowel pins, upper and lower fillet mold supporting members, vertically disposed guide rods with which the ends of the fillet mold supporting members slidingly engage whereby the fillet mold supporting members may be shifted vertically toward or from the connecting rod, means for clamping the fillet molds in place on the fillet mold supporting members, and manually operable means for simultaneously shifting both of said fillet mold supporting members at opposite ends toward or away from each other.

In testimony whereof I hereunto affix my signature.

CHARLIE A. BROWN. 

